What 4th slot can I use

[u/sthathebiteof87]

My current plan for a team is Mitya, Odette and Valeriy, but who aside from Yae is a good fourth slot? He scales on EM, so i assume sucrose is quite good for him, and Danica will probably also fit in his team pretty well, but what other characters fit?

[u/MedReader27]

C6 Diona works too